1.Is this the English class?Yes,it is.And I am your teacher.
2.What are those on the desk?They are carrots.
3.Do you know Mr.and Mrs.Brown?Yes,their son is in my class.He is my friend.
4.Are you Ms.Chen?No,I'm not.She is in that office.
5.Is it John's book?No,his book is here.
6.Mum,have we got any milk?Yes,we have.